Annoying uTorrent problem: Can't browse web while utorrent running

First off I followed the speed guide, I haven't tweaked any internal settings, and I'm using nVidia's network access manager. uTorrent warns that this can cause memory problems for uTorrent, but checking uTorrent's FAQ shows that this has been resolved with the recent release of nVidia's software (which I have) and that the notice will be removed on the next version.

I don't understand how it manages to squelch out my web browsing. I can fireup a usenet client and max my pipe at 1.8-2.0 MB/s and the nVidia software will prioritize Firefox just fine (I can browse like I'm not downloading anything). This does NOT work for uTorrent.